The gain of the retrodirective antenna in the incoming signal direction fluctuates with ? db as the incident angle increases 在來波方向上,天線系統(tǒng)的增益隨來波的入射角有fzdb的波動(dòng)。
This dissertation is mainly focused on the key technologies of smart antenna for mobile station : ( 1 ) the electrically small antennas with two ports, ( 2 ) the performance evaluation of smart antenna for mobile station, and ( 3 ) the retrodirective antenna with multi-feed ports 本文的工作主要圍繞移動(dòng)臺(tái)智能天線的關(guān)鍵技術(shù)進(jìn)行,包括三方面研究?jī)?nèi)容:(1)適用于移動(dòng)臺(tái)的兩端口電小天線;(2)移動(dòng)臺(tái)智能天線的性能評(píng)估;(3)多饋電一體化方向回溯天線。